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Class Information
Number: 175/214
Name: Boring or penetrating the earth > With above-ground means for handling drilling fluid or cutting > Fluid head on tool shaft having lateral port and axial passage with seal for means reciprocable in the head
Description: Apparatus comprising a tool shaft having a fluid head secured to the end thereof located above ground said head being provided with an axially extending passage which is intersected by a generally perpendicular passage extending from the axially extending passage to the exterior of the head, and having a seal located in the head which is adapted to cooperate with a means movable through the axial passage, or the perpendicular passage and one end of the axial passage.

Patents under this class:

Patent Number Title Of Patent Date Issued
8590640 Apparatus and method to maintain constant fluid circulation during drilling Nov. 26, 2013
8556004 Bottom preventer for use in a drilling system Oct. 15, 2013
8286734 Low profile rotating control device Oct. 16, 2012
8029211 Adaptor for setting a self-drilling, chemically anchored, fastening element Oct. 4, 2011
7967084 External water delivery system for rock drills Jun. 28, 2011
7874353 Bearing assembly retaining apparatus and well drilling equipment comprising same Jan. 25, 2011
7823662 Hydrocarbon recovery drill string apparatus, subterranean hydrocarbon recovery drilling methods, and subterranean hydrocarbon recovery methods Nov. 2, 2010
7726416 Bearing assembly retaining apparatus and well drilling equipment comprising same Jun. 1, 2010
7669649 Stripper rubber with integral retracting retention member connection apparatus Mar. 2, 2010
7395877 Apparatus and method to reduce fluid pressure in a wellbore Jul. 8, 2008
7357198 Downhole apparatus Apr. 15, 2008
7334633 Stripper rubber adapter Feb. 26, 2008
7306032 Fluid collecting device Dec. 11, 2007
7299866 Apparatus and method for cleaning out sand from an underbalanced hydrocarbon producing well Nov. 27, 2007
7213660 Washpipe seal May. 8, 2007
7174956 Stripper rubber adapter Feb. 13, 2007
7111692 Apparatus and method to reduce fluid pressure in a wellbore Sep. 26, 2006
7040408 Flowhead and method May. 9, 2006
6796390 Method and device for moving a tube in a borehole in the ground Sep. 28, 2004
6450262 Riser isolation tool Sep. 17, 2002
6325159 Offshore drilling system Dec. 4, 2001
6230824 Rotating subsea diverter May. 15, 2001
6138774 Method and apparatus for drilling a borehole into a subsea abnormal pore pressure environment Oct. 31, 2000
6105692 Swivel chamber for water actuated wireline drills Aug. 22, 2000
5785131 Pressurized formation sample collection Jul. 28, 1998
5101913 Method and apparatus for drilling wells Apr. 7, 1992
5092717 Device for making a drilled hole with an undercut Mar. 3, 1992
5037250 Rotary tool holder Aug. 6, 1991
4949796 Drilling head seal assembly Aug. 21, 1990
4889196 Diverter apparatus Dec. 26, 1989
4640372 Diverter including apparatus for breaking up large pieces of formation carried to the surface by the drilling mud Feb. 3, 1987
4585256 Side feed water swivel Apr. 29, 1986
4500094 High pressure rotary stripper Feb. 19, 1985
4440243 Drill cuttings conveying head with wet cuttings diverter Apr. 3, 1984
4434861 Dust conveying and collecting system and method Mar. 6, 1984
4428421 Wireline winch mounting system Jan. 31, 1984
4357992 Fluid pressurization apparatus and technique Nov. 9, 1982
4312404 Rotating blowout preventer Jan. 26, 1982
4295536 Pressure seal for pumping instruments through drill rod Oct. 20, 1981
4281724 Drilling head Aug. 4, 1981
4208056 Rotating blowout preventor with index kelly drive bushing and stripper rubber Jun. 17, 1980
4157186 Heavy duty rotating blowout preventor Jun. 5, 1979
4090573 Wireline sealing apparatus and method for use with a drill string May. 23, 1978
3985367 Wet drilling system Oct. 12, 1976

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